为什么jinja2/python上的HTML模板在字符串替换中产生'u()'元组错误? [英] Why this HTML template on jinja2/python is producing 'u( )' tuple error in string substitution?
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问题描述
我写了下面的代码，但是发生了一些奇怪的事情.用jinga2替换字符串的某些部分将替换后的字符串放入'u( )'中，方法是:
I wrote the code bellow, but something strange is happening. Some parts of the string substitution with jinga2 are puting the substituted string into 'u( )', this way:
但是只有3个变量会发生这种情况.这里是HTML模板:
But this is happening only with 3 variables. Here the HTML template:
<!DOCTYPE html>
<html>
<head>
<title>Contract with Python</title>
<style type="text/css">
.label {text-align: right}
.error {color: red}
</style>
</head>
<body>
<h2>Contract with Python</h2>
<form method="post">
<hr>
<table>
<tr>
<td class="label">
Name
</td>
<td>
<input type="text" name="person" value=
"{{person}}">
</td>
<td class="error"> {{person_error}}
</td>
</tr>
<tr>
<td class="label">
Nacionality
</td>
<td>
<input type="text" name="nacionality" value=
"{{nacionality}}">
</td>
</tr>
<tr>
<td class="label">
Profession
</td>
<td>
<input type="text" name="profession" value=
"{{profession}}">
</td>
</tr>
<tr>
<td class="label">
Marital Status
</td>
<td>
<select name = "maritalStatus">
<option>unmarried</option>
<option>married</option>
<option>divorced</option>
<option>widower</option>
</select>
</td>
</tr>
<tr>
<td class="label">
Driver's License
</td>
<td>
<input type="text" name="driverLicense" value="
{{driverLicense}}">
</td>
</tr>
<tr>
<td class="label">
SSN
</td>
<td>
<input type="text" name="SSN" value="{{SSN}}">
</td>
<td class="error"> {{SSN_error}}
</td>
</tr>
<tr>
<td class="label">
Address
</td>
<td>
<input type="text" name="address" value=
"{{address}}">
</td>
</tr>
<tr>
<td class="label">
Email (optional)
</td>
<td>
<input type="text" name="email" value="{{email}}">
</td>
<td class="error"> {{email_error}}
</td>
</tr>
</table>
<br>
<hr>
<td class="label">
Contract Type
<select name = "contractType">
<option>House Rental Contract</option>
<option>Car Rental Contract</option>
<option>Other</option>
</select>
</td>
<br>
<br>
<tr>
<td class="label">
Contract number
</td>
<td>
<input type="text" name="numBook" value=
"{{numBook}}">
</td>
</tr>
<tr>
<td class="label">
Initial Page
</td>
<td>
<input type="text" name="numInitialPage" value=
"{{numInitialPage}}">
</td>
</tr>
<tr>
<td class="label">
Final Page
</td>
<td>
<input type="text" name="numFinalPage" value=
"{{numFinalPage}}">
</td>
</tr>
<hr>
<input type="submit">
</form>
</body>
</html>
该如何解决? 为什么只发生在"numBook"，"numInitialPage"和"numFinalPage"上(而不是其他字符串替换)?
整个代码在这里:
# -*- coding: utf-8 -*-
# -*- coding: utf-8 -*-
#!/usr/bin/env python
#
# Copyright 2007 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import os
import webapp2
import jinja2
jinja_environment = jinja2.Environment(autoescape=True,
loader=jinja2.FileSystemLoader(os.path.join(os.path.dirname(__file__), 'templates')))
import re
from google.appengine.ext import db
USER_RE = re.compile(r"^[a-zA-Z0-9_ -]{3,20}$")
def valid_person(person):
return USER_RE.match(person)
PASS_RE = re.compile(r"^.{3,20}$")
def valid_SSN(SSN):
return PASS_RE.match(SSN)
EMAIL_RE = re.compile(r"^[\S]+@[\S]+\.[\S]+$")
def valid_email(email):
return EMAIL_RE.match(email)
import time
import datetime
def getNumBookPg():
doc = open("numbookpg.txt")
numBookPg = []
numbers = doc.read().split()
for n in numbers:
numBookPg.append(n)
return numBookPg
numBookPage = getNumBookPg()
##def updateNumBookPg(b, ip, fp):
## newNumBookPg = ' ' + b + ' ' + str(int(fp) + 1) + ' ' + str(int(fp) + 1)
## doc = open("numbookpg.txt", "w")
## doc.write(newNumBookPg)
def dateToday():
today = datetime.datetime.today()
todayDay = str(today.day)
todayMonth = str(today.month)
monthExt = {'1':' January ', '2':'February', '3':' March ', '4':'April', '5':'May', '6':'June', '7':' July ', '8':'August', '9':'September', '10':'October', '11':'November ', '12':'December'}
todayYear = str(today.year)
return(todayDay + ' of ' + monthExt[todayMonth] + ' of ' + todayYear)
class MainHandler(webapp2.RequestHandler):
def get(self):
numBook = numBookPage[-3]
## numInitialPage = numBookPage[-2]
## numFinalPage = numBookPage[-1]
template_values = {"person": "",
"nacionality": "",
"SSN": "",
"driverLicense": "",
"email":"",
"person_error": "",
"SSN_error": "",
"driverLicense_error": "",
"address": "",
"email_error": "",
"numBook": numBook,
## "numInitialPage": numInitialPage,
## "numFinalPage": numFinalPage,
}
template = jinja_environment.get_template('index.html')
self.response.out.write(template.render(template_values))
## def write_form(self, text_write):
## self.response.out.write(text_write)
def post(self):
person_name = self.request.get("person")
user_nacionality = self.request.get('nacionality')
user_profession = self.request.get('profession')
user_maritalStatus = self.request.get('maritalStatus')
user_SSN = self.request.get('SSN')
user_email = self.request.get('email')
user_driverLicense = self.request.get('driverLicense')
person_error = ""
SSN_error = ""
driverLicense_error = ""
geted_email_error = ""
address = self.request.get('address')
contractType = self.request.get("contractType")
owner = self.request.get("owner")
witness = self.request.get("witness")
numBook = self.request.get("numBook"),
numInitialPage = self.request.get("numInitialPage"),
numFinalPage = self.request.get("numFinalPage"),
if (person_name and valid_person(person_name)) and (user_SSN and valid_SSN(user_SSN)) and ((not user_email) or (user_email and valid_email(user_email))):
a = Person(firstName = person_name,
nacionality = user_nacionality,
maritalStatus = user_maritalStatus,
profession = user_profession,
SSN = int(user_SSN),
driverLicense = int(user_driverLicense)
#address = user_address
)
a.put()
self.redirect('/your_contract?person=%s&nacionality=%s&profession=%s&maritalStatus=%s&SSN=%s&driverLicense=%s&email=%s&witness=%s&owner=%s&contractType=%s&address=%s&numBook=%s&numInitialPage=%s&numFinalPage=%s' % (person_name, user_nacionality, user_profession, user_maritalStatus, user_SSN, user_driverLicense, user_email,
witness, owner, contractType, address, numBook, numInitialPage, numFinalPage))
else:
if not person_name or not valid_person(person_name):
person_error = "Oh no!!! this person name isn't valid!"
if not user_SSN or not valid_SSN(user_SSN):
SSN_error = "Oh no!!! SSN isn't valid!"
if user_email and not valid_email(user_email):
geted_email_error = "Oh no!!! e-mail isn't valid!"
template_values = {"person": person_name,
"nacionality": user_nacionality,
"maritalStatus": user_maritalStatus,
"profession": user_profession,
"SSN": user_SSN,
"driverLicense": user_driverLicense,
"email": user_email,
"person_error": person_error,
"SSN_error": SSN_error,
"driverLicense_error": user_driverLicense,
"address": address,
"email_error": geted_email_error}
template = jinja_environment.get_template('index.html')
self.response.out.write(template.render(template_values))
class your_contractHandler(webapp2.RequestHandler):
def get(self):
geted_person_name = self.request.get('person')
geted_user_nacionality = self.request.get("nacionality")
geted_user_profession = self.request.get("profession")
geted_user_maritalStatus = self.request.get("maritalStatus")
geted_user_SSN = self.request.get('SSN')
geted_user_email = self.request.get('email')
geted_user_driverLicense = self.request.get('driverLicense')
geted_person_error = ""
geted_SSN_error = ""
geted_driverLicense_error = ""
geted_address = self.request.get('address')
geted_owner = self.request.get("owner")
geted_witness = self.request.get("witness")
geted_contractType = self.request.get("contractType")
geted_dateToday = dateToday()
your_contract = jinja_environment.get_template('your_contract.html')
geted_numBook = self.request.get('numBook')
geted_numInitialPage = self.request.get('numInitialPage')
geted_numFinalPage = self.request.get('numFinalPage')
## updateNumBookPg(geted_numBook, geted_numInitialPage, geted_numFinalPage)
your_contract_values = {"person":geted_person_name,
"nacionality":geted_user_nacionality,
"maritalStatus": geted_user_maritalStatus,
"profession": geted_user_profession,
"SSN":geted_user_SSN,
"driverLicense":geted_user_driverLicense,
"address":geted_address,
"email":geted_user_email,
"contractType":geted_contractType,
"dateContract":geted_dateToday,
"numBook":geted_numBook,
"numInitialPage":geted_numInitialPage,
"numFinalPage":geted_numInitialPage,
}
template = jinja_environment.get_template('index.html')
self.response.out.write(your_contract.render(your_contract_values))
class Person(db.Model):
firstName = db.StringProperty(required = True)
# lastName = db.StringProperty(required = True)
nacionality = db.StringProperty(required = True)
maritalStatus = db.StringProperty(required = True)
profession = db.StringProperty(required = True)
SSN = db.IntegerProperty(required = True)
driverLicense = db.IntegerProperty(required = True)
# address = db.PostalAdressProperty(required = True)
# condition = db.StringProperty(required = False, choices=set(["buyer", "seller", "renter", "owner", "witness"]))
##class Acts(db.Model):
## firstPart = db.StringProperty(required = True)
## secondPart = db.StringProperty(required = True)
## contractNumber = db.IntegerProperty(required = False)
## contractDate = db.DateProperty(auto_now_add=True)
## contractDraft = db.TextProperty(required = True)
app = webapp2.WSGIApplication([('/', MainHandler), ('/your_contract', your_contractHandler)],
debug=True)
推荐答案
numBook = self.request.get("numBook"),
numInitialPage = self.request.get("numInitialPage"),
numFinalPage = self.request.get("numFinalPage"),
正如Wooble的评论所说，这些行不应以逗号结尾.
As Wooble's comment says, these lines shouldn't end with commas.
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